长箱形结构箱体焊接变形控制及研究  

Research on Welding Deformation Control of Rectangular Box

作　　者：于前 吴香清 胡妞 YU Qian;WU Xiangqing;HU Niu(Zoomlion Heavy Industry Co.,Ltd.,Changsha 410013,China)

机构地区：[1]中联重科股份有限公司,长沙410013

出　　处：《机械工程师》2021年第11期166-168,共3页Mechanical Engineer

摘　　要：以长箱形结构箱体焊接变形为研究对象,结合实践经验,从材料精度控制、刚度及约束度、焊接热输入、焊缝质量,以及返工等方面探讨箱体焊接变形影响因素,并提出预防措施。采取措施后,长箱形结构箱体焊接变形得到了较好控制,尤其是上下盖板翘起变形量由3.6 mm降低到1 mm以内。Taking the rectangular box body welding deformation as the research object,combined with practical experience,this paper discusses the influence factors of the box body welding deformation from the aspects of material accuracy control,stiffness and restraint,welding heat input,weld quality and rework,and proposes preventive measures.After taking measures,the welding deformation of the rectangular box body has been well controlled,especially the tilting deformation of the upper and lower cover plates has been reduced from 3.6 mm to less than 1 mm.

关 键 词：长箱形结构 焊接变形 焊接线能量 

分 类 号：TG44[金属学及工艺—焊接]